Heart rate monitor



FIG. 1 is a perspective view of a portable heart rate monitor, showing my new design;

FIG. 2 is a perspective view of a second embodiment of the heart rate monitor shown in FIG. 1 with an LED safety light located below the monitor display area, with all other portions corresponding to the monitor showin in FIGS. 1 and 3-8;

FIG. 3 is a front elevatonal view of the monitor shown in FIG. 1;

FIG. 4 is a rear elevatonal view of the monitor shown in FIGS. 1 and 3;

FIG. 5 is an elevational view of one side of the monitor shown in FIGS. 1, 3 and 4;

FIG. 6 is an elevational view of another side of the monitor shown in FIGS. 1 and 3-5;

FIG. 7 is a bottom view of the monitor shown in FIGS. 1 and 3-6; and,

FIG. 8 is a top view of the monitor shown in FIGS. 1 and 3-7.

The broken line showing of the buttons and dials in FIGS. 1-3 and 6-8 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a heart rate monitor, as shown and described. 